Spectacle joint



Nqv. 9, 1937. G. L.. MANDAVILLE SPECTACLE JOINT Filed May 8, 1935 2 Sheets-Sheet l v 5%wwws/igs/i/p@ f jswsmma -L'm A www@ EL@ MHA/17H WM5 Nov. 9, 1937. G. Al MANDAvn 2,098,921

. SPECTACLE JOINT Filed May 8, 1935 2 Sheets-Sheet 2 C C6 11C C C I C e913 J4 3mm -VLA/H/VZHVJLLE Patented Nov. 9, 1937 UNITED STATES .PATENT OFFICE".

SPECTACLE JOINT Gurney Lee Mandaville, Fort Pierce, Fla.

Application May 8, 1935, Serial No. 20,491

10 Claims.

My invention, which relates to the art of optics, has special reference to spectacles and specifically to joints between the lens holders, or end pieces, and the temples for both rimmed and rimless mountings.

Primarily the invention has for its Object to provide a construction by the employment of which breakage of the lenses by undue strain as applied by the temples through the end pieces on the lenses is avoided.

Further, it is an object to provide a means to assist in keeping the proper adjustment of the vtemple pressure against the wearers face.

Further, it is an object to provide means to keep the temples from coming loose at the joints.

Further, it is an object to provide a spectacle joint which will not mar the beauty or greatly enlarge the present construction of the standard end piece.

Other objects will in part be obvious and in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends the invention still further resides in the novel details of construction, combination and arrangement of parts, all of which will be first fully described in the following detailed description, and then be particularly pointed out in the appended claims, reference being had to the accompanying drawings, in which:

Figure 1 is an enlarged detail elevational View from the face or inner side of aspectacle joint embodying the present invention, the temple being opened to the full position.

Figure 2 is a vertical, longitudinal section on the line 2-2 of Figure 1, with the temple folded down.

Figure 3 is a view similiar to Figure 2 with the temp-le in the position in which it is worn.

Figure 4 is a view similiar to views in Figures 2 and 3, but showing the temple in the position of Figure 1.

Figures 5, 6, and 7 respectively are views similar to Figure 3, showing the invention adapted to other shapes of spectacle ends. 45 In the drawings, in which like numerals of reference indicate like parts in all the drawings, I represents the temple whose flattened end 2 constitutes one element of a hinge joint. The flattened end 2 has a periphery of two radii, one radius forming a circular surface 3 of greater radius than the other 4, the two surfaces 3 and 4 merging at 5 in a stop shoulder. Where the surface 4 terminates adjacent the temple bar a seat 6 is formed. The seat cooperates with a stop I6 hereinafter again referred to.

The flat portion 2 is pivoted to and secured to the end piece 8 by a screw or rivet II which passes through the hole 'I. The end piece comprises a barrel having straps 9. The barrel is bored at I3 to receive the push pin or plunger I8 whose head bears against the surfaces 3, 4, and 5 to keep the joint from exhibiting looseness, and to cooperate with the shoulder 5 as a normal stop to limit normal opening of the temple to a position approximately at right angles to the plane of the lens and the axis of the end piece 8 (see Figure 3).

The plunger I8 also cooperates with the temple to apply a sufficient tension thereto to hold the temple closely to the wearers face. This function is accomplished by locating the axis of the plunger offset with respect to the axis of the pivot screw VI l, as indicated in Figures 2 to 4, inclusive.l

The end piece 8 has the entrant end of its bore I3 threaded and closed by a screw plug 20. A spring IS serves to press the plunger I8 into contact with the surfaces 3, 4 and 5 of the fiattened portion 2 of the temple I, and because of the fact that the axis of the plunger I8 lies offset to the axis of the screw II, as before indicated, this makes it possible to obtain a movement of the temple of sucient amount for putting the spectacles on and off and yet give a good tension to hold the temples closely to the wearers face.

The straps 9 extend over the lens 2I and are secured thereto by screws I4, there being guards I2 provided if desired to prevent swiveling on the screw I4. The outer end of the end piece 8 is slotted as at I6 to receive the flat portion 2 of the temple I. The end piece 8 is also slotted as at I5 to permit insertion of a leaf spring I6 which is fastened to the end piece by a screw I'I, and cooperates with the recess 6 of the temple I as a stop to limit the closing movement of the temple. It also serves in cooperation with the shoulder 5 Vas a limiting stop to limit the openingv movement of the temple.

So far as described, it will be seen that when. the temple I is opened to the normal position for use (see Figure 3) the plunger Ywill be engaged by the shoulder 5 and will act as a stop as well as a hinge joint tension device to prevent looseness of the joint. Should, however, the temple swing outwardly beyond the normal open position, a thing which heretofore has often resulted in breakage of the lens, the plunger will be forced back and the temple will be permitted to swing to its farthest open position see Figures l and 'Y of the invention will be clear to those skilled in 47),'the movementV being then lirnited'by 4the spring rI6 engaging with the shoulder 5.

In the embodiments of my invention shown jin'Figures 5, 6, and 7 the plunger hasV a friction I i surface indicatedby 22 'inFigure 5, in order to engage the surface 4a ofthe temple hinge and holdi it in any position in which it may be placed VbyY retaining friction. The plunger 18a in Ythis .embodiment of the invention also serves `asi a stop in cooperation with the shoulder 5a.

In Figure 5 those parts which correspond in purpose to like parts in the preceding figures Vbear the same reference Anumber plus the index letter a; those parts in Figure 6 which corre` spond in purpose to like parts in the ,precedingVV Vfigures have the same reference number plus-theV index letter b; while those parts in `Figure Y'7i which correspond in purposeto like parts in the Vto said 'end piece,Y said end piece having a Vbore f and a slotted end, said temple having a flattened Aend to fit insaid slotted end, a hinge pin passing through saidV slottedY end and said flattened end, said flattened end having a peripheral surface comprising adjacent portions of two Yradii with a shoulder` between them, anda spring pressed plunger in said bore to engage said peripheral A2. 'In spectacles, an end piece, means'to secure vthe vsame to'a lens, a temple-hingedly connectedV 'to said end piece, combined with means for limit- Ying the unfolding movement of the temple to a normal positionfor use, said temple having a seat and a yieldable stop member carried byV said 'end piece for engaging said seat to limit the folding movement of the temple. Y a

3.- In spectacles, an end piece, means to secure the same to a lens, a temple hingedly connected to said end piece, combined with means rt exert ai turning force on the temple tending toapply sufficient pressure to holdV the temple bar in contact with the face of the wearer, said temple having aseat and a yieldable stop member carried by said end piece for engagingsaid'seat to limit the folding movement of the temple. f Y

4. In spectacles, an end piece, means to secure the same to a lens, a temple hingedly connected to said end piece, aspring pressed plunger located within" said en d piece Vand engaging the hinge part ofv said temple to take up looseness in Vthe. joint, said templerhaving a seathanda yieldable Vstop memberjcarried by said end piece forfengaging said seat to limit the foldingmove- .ment ofthe temple.

5. Inspectacles, anv end piece, Vmeans yto secure the same tol a lens, a templehingedly Yconnected to said end piece,'a spring pressed plunger lo- .70 Vhinge part 'of said'temple ata point offset from cated within said end piece andengaging ythe 'limit thel fol-ding'movement of'theftemple.;Y a v 10. In spectaclesan end piecemeans to Ysecure Y '..the same to Va lens, "a temple 'hinged1y connected the hinge-axis thereof, said temple having a seat and a yieldable stop member carried Vbyrsald end piece for engaging said seat to limit the folding'Y a movement of the temple. v

6. In spectacles, an end piece, means to secure y the same toa lens, a temple hingedly connected to said end piece, said end piece having a bore and a slotted Yend, said ltemple having a flattened end to fit in said slotted end, a hinge prinr passing through said slotted end and said flattenedend, `10

said flattened end having a Yperipheral surface Ycomprising Yadjacent portions of,r two radii with a shoulder between them, and a springV pressed plunger in said bore ktoengage said peripheral sur#r face, said temple having a seat and a stop member V Y carried by said endpiece for engaging said seat Y. Y to limit the .folding movement of the temple.

'7. In spectacles, an end piece for attachment to alens, said end piece having a bifurcated end,

a temple having a attened end located betweenY V the fur-cations of said bifurcat'edrend, a hinge pin' passing through said bifurcated and flattened ends, said end piece having a bore whose axis lies vat right angles to and'offset from said hinge pins axis to engage the periphery of said flattened end, the peripheryof saidliattened end including two `adjacent arcuate surfaces of different radii Witha Y rshoulder between the surfaces, said` shoulder beingY so located as'to limit the normal unfolding or opening movement of the Vtemple to a direction approximately at right angles to the plane of the lens;

8. In spectacles,Y an end piece for attachment Y toY Va lens, saidV end piece having Va bifurcated end,

a temple having a'attened end `located between 35 'Y the fureations of said bifurcated' end, a .hinge pin passing through said bifurcated and flattened j ends, said end piece having a bore whose axislies at right angles to and offset from thev periphery of said flattened "pend including two Yadjacent -40 arcuatesurfaces of differentV radii with a shoulder between the surfaces, said shoulder being so lo.- catedr as to limitftheY normal unfolding or open' ing movement of the ltemple to aY direction approximately at right Yangles to the plane of the 45 lens, anda leaf spring secured to said-end piece toVY overlie the space in which said flattened end is llocated,said temple havinga seat'tocooper'ate with said leaf spring for limiting the` folding and f unfolding extremes'of movement of said templeon .50 'its hinge axis.

9. In spectacles, an en d piece,-rneanstoV secure the same to a lens, a temple hingedly connected to `said end piece, combined with means, including a f lyieldable member and a stopcooperating there- 55V With for limiting the unfolding movement'of the `temple toa normal position for use, said templeY having ajserat and a yieldable stop'member car- Y ried hy said end piece for engagingfsaid seat to to said end piececombined with means including a yieidable memberuand a stop cooperating therewith to ,exert a turning forceon the temple tendf565 ing toY apply sufficient pressure to hold the temple Ybar in contact with the face of the wearer, said temple having a seat and aryireldable stop mem*- ber carried by said end piecefor yengagingsaid seat to limit the'foldingmovement of the templelo GURNEY LEE MANIlmvrnLiJ.l 

